Cutter-holder for lathes, planers, &amp;c.



Patented Oct. I5, l90l. J. P. SEIL. CUTTER HOLDER FOR LATHES, PLANERS, &c.

(Application filed Mar. 23, 1901.)

(No Model.)

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UNITED STATES PATENT OEEIcE.

JOSEPH P. SEIL, OF NEW YORK, N. Y.

CUTTER-HOLDER FOR LATHES, PLANERS, 84.0.

SPECIFICATION forming part of Letters Patent No. 684,465, dated October 15, 1901. Application filed March 23, 1901- Serial No. 52,645. (No model.)

To all whom it may concern; connection with one face of the cutter 4. Be it known that l, JOSEPH P. SEIL, a citi- The adjusting means 6 may consist of a zen of the United States, residing at New threaded bolt 13,which is passed transversely 55 York, in the county and State of New York, through a threaded bore 14 in the tool-post 2 5 have invented certain new and useful Imand carries the block 7 upon its outer end 15. provements in Cutter-Holders for Lathes, The inner end of the bolt 13 is headed, as at Planers, Shapers, and the Like, of which the 16, to enable rotation by a wrench or similar following is a specification. tool. The block 7 is provided with a threaded 60 This invention relates to cutter-holders for bore 17, which receives the bolt 13. A washer IO lathes, planers, shapers, and the like; and it 18 may be applied to the bolt 13 between the has for its object to provide an improved cuthead 16 of the same and the tool-post to fater-holder of this class which shall possess cilitate the tightening of the bolt in the bores advantages in point of positiveness in the 14 and 17 and a consequent positive binding 65 cutter-holding function, facility of adjustof the block 7 upon the beveled shoulder 18 I5 ment, and simplicity of construction. and the cutter 5. To provide a secure seat In the drawings, Figure 1 is a perspective for the cutter 5, the jaw 3 is preferably pro- View of a tool-post embodying the improved vided with a transverse angular notch 19, in cutter-holder. Fig. 2 is a detail vertical secwhich one edge of the cutter may be seated, 7o tional view of the same. Fig. 3 is a perspecand the block 7 may be provided at its outer 2o tive View of a modified form of the construcedge 20 with a transverse lip 21, which with tion illustrated in Fig. 1. Fig. 4 is a detail the beveled face 12 of the block '7 forms a vertical sectional view of the same. Fig. 5 transverse angular notch 22, in which an-opis a detail face view of a portion of the conposite edge of the cutter may be seated. 75 struction shown in 3. This formation and relative arrangement of Corresponding parts in all the figures are parts is particularly adapted for the positive denoted by the same reference characters. clamping of a cutter having the customary Referring to the drawings, 1 designates my body portion or shank 23 of substantially recimproved cutter-holder, which, as illustrated tangular formation, as it results in the firm 80 in the drawings, may be applied to the cusclamping or binding of the cutter-shank on tomary tool-post 2oranyequivaleut member all sides or faces; but the several notches of lat-hes, planer-s, shapers, and the like. and beveled faces of the jaws 3 and 4 are so In carrying out my invention I provide two formed and proportioned that the entire opclamping-jaws 3 and 4, respectively, one of erative edge portion of the tool projects be- 85 which, 3, is preferably embodied in the toolyond the jaws 3 and 4, so as to permit its enpost 2, andis consequently fixed and immovgagement with the work. The provision of able, and the other of which, 4, is adjustably the transverse lip 21, which forms the notch carried by the tool-post, whereby it may be 22, is, however, not essential to the perfect moved with relation to the jaw 3 to clamp clamping operation of the jaws 3 and 4, as 0 the cutter 5 in operative position. the beveled face 12 of the block 7 will effect- 6 designates means for adjusting the movively force the cutter into engagement with able jaw 4. the notched portion 19 of the jaws 3 and posi- In the preferred form of construction the tively maintain the cutter in position. movable jaw 4 consists of a wedge-shaped In Figs. 3, 4, and 5 I have shown a modi- 5 block 7, which operates with respect to the tied form of construction in which the sev- 5 cutter 5 and with respect to a beveledshouleral parts are of the same general construcder 8, which is secured to or formed integral tion as in the foregoing figures, but are adaptwith one face 9 of the tool-post 2. Thewedgeed for holding a cutter 24, having longitudishaped block? is provided with a beveled face nal series of notches 25, said notches being I00 10, which fits and operatesin connection with formed in the edge portion of the cutter,

the beveled face 11 of the shoulder 8. The which is seated in the notch 19. The jaw 3 block 7 is also provided with an oppositelyis provided with one or more locking-pins 26, beveled face 12, which fits and operates in which extend transversely through the same and project within the notch 19, as at 27, and the pins 26 are spaced apart at their projecting ends 27,so that they fit,respectively,within an equal number of, the notches 25 in the cutter when the latter is forced home in the notch 10 by the clamping action of the jaws 3 and 4.

The operation and advantages of my improved cutter-holder will be readily understood by those skilled in the art to which it appertains. In adjusting the cutter to the tool-post one edge of the cutter is seated in the notch 19, and the threaded bolt is operated by the application of a suitable tool to the head 16, which operation brings the wedge-shaped block 7 to bear upon the shoulder 8 and upon the tool 5. As the manipulation of the bolt continues the beveled faces 10 and 12, which bear, respectively, upon the beveled face 11 of the shoulder 8 and upon one face of the cutter-shank 23, cause a firm seating of the cutter in the notch 19 and a tight clamping of the cutter between the jaws 3 and at. The wedge-like action of the block 7 between the shoulders 8 and the cutter 5 causes an equalization of pressure upon the shoulder 8 and upon the cutter, and this equalization of strain permits the free and easy movement of the block 7 upon the bolt, as there is no lateral binding or friction of the block upon the bolt. Facility of operation and positiveness of the resulting clamping action are thus obtained. When the lip 21 is employed upon the block 7, forming the notch 22, the possibility of lateral movement of the cutter is entirely obviated; but this construction is not ordinarily necessary to accomplish the ends in view.

In the form of construction illustrated in Figs. 3, 4, and 5 the cutter is positively prevented from longitudinal displacement or shifting, and as the cutter wears away in use it may be adjusted in the notch 19 to compensate for its decrease in length, the pins 26 being fitted into the several notches or slots 25 as determined by the adjustment of the cutter.

The entire cutter-holder is simple in construction and positive in operation and effectively serves the purposes for which it is intended.

I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications may be made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention andimprovementsv I therefore reserve the right to all such variation and modification as properly falls Within the scope of my invention and the terms of the following claim.

Having thus described my invention, I claim and desire to secure by Letters Patent The combination, with a cutter provided with a plurality of serially-arranged notches, of a cutter-holder, comprising a fixed jaw provided with a locking-pin secured in said fixed jaw and projecting through said cutter-seat in position for engagement with one of said notches, a movable jaw,and means for clamping the cutter in operative position between said jaws.

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

JOSEPH P. SEIL.

Witnesses:

GEO. VAIL HUPPERTZ, J. R. LITTELL. 

